#VU46737 Out-of-bounds read

Published: 2020-09-04 | Updated: 2020-09-15

Vulnerability identifier: #VU46737

Vulnerability risk: Medium

CVSSv3: 4.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:W/RC:C]

CVE-ID: CVE-2020-24977


Exploitation vector: Network

Exploit availability: No

Vulnerable software: Libxml2
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the xmlEncodeEntitiesInternal() function in libxml2/entities.c in libxml2. A remote attacker can pas specially crafted XML data to the affected application, trigger out-of-bounds read error and read contents of memory on the system.


Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Note, the vulnerability was fixed in a commit 8e7c20a1 (20910-GITv2.9.10-103-g8e7c20a1).

Vulnerable software versions

Libxml2: 2.9.10


External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability